Find HTML elements that are causing overflow and expanding the viewport.

find_overflow_elements

// custom node array iteration function
var nodeArray = function (array, callback, scope) {
    for (var i=0; i < array.length; i++) {
        callback.call(scope, i, array[i]); // Return each element
    }
}

// Document Width
docWidth = document.documentElement.offsetWidth;
nodes = document.querySelectorAll('*');

nodeArray(nodes, function (index, value) {
    if (value.offsetWidth > docWidth) {
        console.log(value);
    }
})